36 AMERICAN COLEOPTERA. 



In distribution it is essentially northern. Specimens are known 

 to lue from Labrador; the higher altitudes of Mt. Katahdin, Me., 

 and Mt. Washington, New Hampshire ; Ungava Bay and the Hud- 

 son Bay territory; the northwest territories of Canada, British 

 Columbia and Alaska. 



Subgenus I.KIROSJOTIIS Gaiiglb. 



Prothorax distinctly wider in front of base. Prosternum not 

 margined at tip. Apical spur of anterior tibiae simple. Middle 

 tibiae not dentate on the inner side in the males. Posterior tibiae 

 not pubescent on the inner side in the males. 



Intermediate in characters between Cyrtonoins and Leioenemis, 

 differing from the former by the middle tibire simple in both sexes, 

 and from the latter by the prosternum not margined at tip. 



But one species occurs in our fauna, which was formerly referred 

 with avlda to Leioenemis. 



20. A. areiiaria Lee. — Nearly oblong, convex, the elytra flattened on the 

 disk. Golor piceous, shining. Head as wide as the thorax at apex ; eyes very 

 finely granulate; frontal grooves small, punctiform ; antennte rufous, as long as 

 the head and thorax ; palpi rufous, the terminal joint slightly swollen, acumi- 

 nate toward the tip. Prothorax about one-half wider than long, wider at base 

 than apex, impnnctate; apex emarginate ; transverse impressions distinct ; me- 

 dian line distinct, abbreviated before and behind ; basal impressions linear, the 

 inner fovea distinct, the outer obsolete; base truncate, slightly obliquely so each 

 side; sides with the margin narrowly reflexed, rounded, oblique behind; hind 

 angles slightly obtuse and not carinate. Elytra wider than the thorax, finely 

 striate; striae entire, impnnctate, the scutellar stria obsolete, the eighth with the 

 row of ocellate punctures narrowly interrupted at middle; humeri subangulate; 

 intervals slightly convex. Body beneath piceous, impnnctate. Legs rufous; all 

 the femora with two setigerous punctures along the inner margin; tarsi not 

 grooved on the outer side. Length .20-. 23 inch ; 5-5.75 mm. 



The anterior tarsi are more narrowly dilated than in most 

 Amarse. The males have one, the females two anal setae. 



A very distinct little species, easily recognizable from the others 

 in our fauna. It seems subject to but slight variation. In a few 

 specimens examined a faint trace of the scutellar stria has been 

 observed, usually, however, on but one elytron. 



The form of the palpi is dirterent from that of any of our otiier 

 species of the genus, and resembles, judging from descriptions, that 

 of the European A. (Leirouotus) glabrata. 



It is apparently northern in its distribution. Specimens have 



